Home / 12,999,756.16-17,939,442.81-7,198,413.34

Finding the Fourth Proportional to 12,999,756.16, 17,939,442.81 and 7,198,413.34

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Solution

The fourth proportional to 12,999,756.16, 17,939,442.81 and 7,198,413.34 is: 9,933,688.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999,756.16 : 17,939,442.81 = 7,198,413.34 : x
  2. Step 2: Convert to fraction form
    12,999,756.16/17,939,442.81 = 7,198,413.34/x
  3. Step 3: Cross multiply
    12,999,756.16x = 17,939,442.81 × 7,198,413.34
  4. Step 4: Simplify right side
    12,999,756.16x = 129,135,524,435,671.08
  5. Step 5: Solve for x
    x = 129,135,524,435,671.08/12,999,756.16
  6. Step 6: Final answer
    x = 9,933,688.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.